Electric lamp



May 10,1927:

1.. s, BRACH ELECTRIC LAMP Y Filed JuneS. 419:25 s sheets-snm, 2`

LEON S Beacff k Patented May `1,0, 1927.

UNITED! STATE-s l PATENT OFFICE.

LEON S. BEACH, OF EAST ORANGE, NEW JERSEY, ASSIGNOR' TO L. S. BEACH ,MANU- FACTURING CO., NEWARK, NEW JERSEY.

ELECTRIC LAMP.

Application led June 5,

' This invention relates to an electric lamp and as depicted in the drawings attached `to and formmg a lpart of the specification, it is illustrated as adapted to a railway lamp.

1t is one 0f the objects of my invention to provide, particularly, in a railway lamp, means for housing the electric light bulb and its associated mounting and reiiector so as to protect same 'from coal dust, gasses, and circulation of air currents which all tend to impair the efliciency of the various parts, particularly, the reflector.

Another object of my invention is to provide a lamp in which the bulb can be readily focused in the reflector and in which the focusing parts may be securely locked in position so that jars and vibration will not put the bulb out of focus.

Another object of my 'invention is to provide a unitary construction including a. re'

yflector and mounting for the same together `with the lamp socket and adjusting means whereby the same may be assembled complete, independent of thehousing in which the unitary structure is to be placed.

Another object ofmy invention is to provide a solid substantial housing for the said unitary structure and to provide means within the housing whereby the unitary structure may be quickly mounted and adj usted.

These and other objects will be apparent to one skilled in' this art after a study of the specification taken in'connection with the annexed drawings, in which- Figure lis a frontview ofthe complete lamp as constructed for railway purposes.

. Figure 2 is a side view of Fig. 1 showing the means for mounting the lamp.

Figure 3 .is a vertical sectional view on the line 3 3 of Fig. 1 butiwith the cover and body part broken and brought slightly together so as to get the view on the sheet.

Figure 4 is a view from the back of the lamp with the casing cover removed.

Figure 5 is substantially a full size view of the bulb socketl and associated mechanism, while Figure 6 is an ehd view of Fig. 5. Referring now to the details wherein .like numbers refer to corresponding parts in the various. views, 1 is a casing o'.

' ber 13 `by a liange ring 14, the same being held in any suitable,

1.925.` Serial No. 35,441.

material having a cover 2 provided with lugs 3 between which a rod 4 is positioned therebyserving' as a handle for the cover. The casing 1s provided with a dowel pin 55 adapted Vto position the cover 2 over the front of the casing 1 is a transparent mempreferably glass, that is held in place place in any satisfactory manner as by screws 16and lock washers 17, suitable packing 15 being used to prevent breakage of the glass 13 as well as to make a dust and gas proof joint between the ring 14 and the front of the casing 7. The interior of the casing 1 is provided with a fixed anchorage which is in the form of a rib 18 having an upwardly projecting flange 19. At the top of the casing amovable anchorage is provided comprising a lug 20 fastened to the casing 1, and between ears on the lug a threaded screw 21\is pivoted, .The threaded screw 21 carries a washer 22 and wing nut 23. These two anchorages are provided for mounting within the casing 1, the unitary structure which will now lbe described.

rIhe unitary structure comprises a shell 24 preferably of suitable metal Within which is positioned a reflector 25 preferably of glass; The reflector 25 is held in position by an annular ring 26 which engages at 27 the outer edge of the refiector. Carriedvbetween the ring 26 and the outer rim 28 of the shell' is a suitable packing means preferably in the fo'rm 0f a ring of good felt. The packing member 294 may be held to the rim 28 and ring 26 as by means of cotter pins 56. The packing 29 acts as a cushioning means for engaging the inner Wall of the casing' land the packing 29 preferably extends beyond the ring 26 and the rim 28 so as to be at least-Slightly compressed when the parts are in the,position as shown in Figure 3.i Vhcn a glass reflector is used, l prefer to use suitable packing material 3() at the rear of the reflector between it and the shell 24. Attached tothe shell, as by rivets 31, is a pair of arms or brackets 32 and As illustrated inthe drawing, multiple leaves are utilized forf'this purpose.

The bracketsl 32 and 33 are forked at each end, the lower bracket passing over the rib 18,-see Fig. 4, and behind the flange 19, while the upper bracket 32 is adapted to receive the threaded screw or movable an- 'i chorage- 21. The shell 24 has a projecting receive a lamp contact member 40, the same part 34 which is slotted so that the same may be compressed. l also prefer to use a reinforcing collar 35 which is also slotted to correspond to slots in the projection 34. Carried bythe projection 34 and slidable within the reinforcing member 35 is an insulator 36 which is preferably tubular in form. Within the insulator 36 is a tubular socket member 37 having the usual bayonet slots at one end to carry a lamp bulb 38 Positioned within the socket 37 is another insulator 39 which has a central passage therethrough to being slidablewithin the insulator 39.' Carriedon the outer vend of the members 36 and 37 is a yoke 41 preferably of good insulating material. The yoke 41 isvanchored to the members 36'and 37 and also the. insulator 39 in any satisfactory manner' as by-,a set screw 42. Carried on the yoke are two termi nal contact members 43 and 44. Fastened to the terminal 44 is a metallic connecting stripr 45 which has a flange 46 extending slightly beyondthe end of the insulator 36 and tha annular space between the flange 46 and the end of the socket 37 is filled with solder 47 thereby completing a connection fromA 'the terminal 414'to the lamp socket 37. The-A contact terminal 43 is provided witha yspring Contact member 48 which is forked at 49 to fit over the end 50 of the terminal 40, resting against a flange 51 on the member 40 thereby applying a small amount of ress ure to the contact terminal 40 to hold` t e same against the central contact of the lamp bulb 38 to insure thatV the same is held in locked position' in the socket member 37. In order to insure a good contact to the member 40,1 ll preferably provide a flexible stranded-conductor 52 between theaterminal 43 and the end 51 of the member 40.'

The projection 34 is adapted to receive a clamping member 53 which may be of any suitable form, the pressure between the clamps being obtained by the screws 54, so that when the members 36 Aand 37 are slidably adjusted within the projection 34,-the same may be locked securely in position. As will be' seen, this adjustmentvof the. lamp bulb 38 within the reflector may be readily obtained by loosening theclamp and tak-- Leanser n0' hold of the yoke 41 and moving the comp ete yoke structure. The bracket members 32 and 33 have a certain amount of resilience so that when the unitary structure herein described is mounted within the casing, the

effect is that of a spring pressed connection against the front of the lamp casing.

While .I prefer to assemble the packing 29 in the manner'illustrated in the drawing, it may, of course, be attached to the front part of the casing and cooperate with the shell Aand redector to close the front opening into the -redectoix @ther changes in the details may of course be readily brought about without departing fromI the spirit of my invention or the scopeiof the appended claims,

Having thus'clescri ed my invention what l claimis:

1. ln combination, a casing having a transparent member mounted in the front thereof, said casing having at least one fixed and one adjusting anchorage means, a reflector,

' a shell'carrying the reflector, a ring attached to the shelland having a part engaging the edge of thel reflector for holding it 1n position' within the shell, cushioning means cooperating betwen the shell, ring 'and front of said casing to insure a substantially tight joint around the front part of the reflector,

at least, two metal members attached to the shell, oneof said members engaging said fixed anchorage and the other said adjusting anchorage on the casing, a lamp socket carried Aby 4said shelland adapted tocarry a lamp within said reflector.

. Q-2. In combination, a casing having a transparent memberimounted ,in the front thereof, a reectonj, shell carried by the reflector, aring attached to the shell and having a part engaging the edge of the reflector for holding it in position within the shell, cushioning means cooperating between the shell, ring and front of said casing, to insure a substantially ti ht joint around the front part of the .re ector said casino' having a xed anchoraofe at the bottom of the casing and a pivoted screw threaded anchorage at ythe top, a pair of forked metal members attached to the shell at substantially diametrically opposite. points, one of 4said forked members engaging said fixed anchorage and the other said screw threaded anchorage whereby the cushioning means may be drawnti htly against said casing front, a lamp soc et carried by said shell and adapted to carry a lamp within said reflector.

3. In combination, a casing having a transparent member mounted in the front thereof, and a unitary structure carried within the casing for emitting light through said transparent member, said unitary structure comprising; a reflector, a Vshell carrying the reector, a ring, resilient packing means belllli it Within saidcasing, said shell having an Vextending part, and allump mounting u djustably cai'ried by said exiiending part,

.said lamp mounting including a yoke' on its outer end, said yoke carrying contacts with' 10 means for engaging 'members kcontacting with the termmals of the 4light bulb.

In testimony whereof, Iaix my signature.

LEON s. BEACH.. 

